Improvement in whiffletree-couplings



a. H. MERRIMAN.

Whfetree-Couplings. No. 161,808. PatentedApri|6,1s7e.

illum"Y THE GRAPHIC C0.PHDTO ,-L|TH.39.&4`I PARK PLACE, ILY.

STATES PATENT GFFIoa BENJAMIN H. vMERRIMAN, OF NEW HAVEN, CONNECTICUT, ASSIGNOR OF ONE-HALF HIS RIGHT TO CHRISTOPHER A. SCRANTON, OF SAME PLACE.

IMPROVEMENT IN WHlFFLETREE-COUPLINGS.

Specification forming part of Letters Patent N o. l6l,80, dated April 6, 1875; application tiled July 20, 1874.

To all whom it may concern:

Be it known that I, BENJ. H. MERRIMAN, of New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in WhifdetreeCoupling; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description ot' the same, and which said drawings constitute part of this specification, and represent, in-

Figure l, a side view; Fig. 2, a longitudinal section; Figs. 3 and 4, perspective views of the parts detached.

This invention relates to an improvement in the device by which the whiffletree is pivoted to the cross-bar ot carriages, the object being to relieve the bolt from the strain usually brought upon it, and to practically prevent the accidental removal of the whiffietree; and the invention consists in a pair of plates-one for the cross-bar, the other for the Whittletree-the one constructed with a vertical circular Bange and a second internally-threaded flange, the other constructed with a circular iiange corresponding to the Iirst, and with a central externally-threaded boss correspondy ing to the second flange, so that the threaded boss maybe screwed into the other part, the anges forming the bearing or pivot upon which the whiftletree may turn,`and the screw serves to hold the parts together, all as morey fully hereinafter described.

A is the one plate; B, the other plate, constructed to be secured, the one to the crossbar, the other to the whiftletree. The plateA4 is constructed with a (lange, C, circular upon its Lipper surface, and with a central flange, D, which is threaded upon its inside. The other plate, B, is constructed with a lange, E, to iit within the [iange C 0f the other part, and with a central boss, F, which is threaded to correspond to the internal thread of the iiange I), so that the two parts are set together by screwing the one into the other, as seen in Fig. 2.

The screw allows the required play for the whiiiletree, and yet prevents the accidental separation of the parts. I prefer to employ a bolt through the whole, and for this purpose make a centralperforation, Gr; but this is not essential. The relative position ot' the anges may be reversed, it' desired.

I claim- The vwhitletreecoul'iling consisting ot' the plate A, with its circular ilange C and threaded ange D, combined with the plate B, with its circular tlange E and threaded boss F, substantially as set forth.

BENJAMIN H. MER-RIMAN.

Witnesses:

JOHN E. EARLE, J. H. SHUMWAY. 

